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                            <div style="color:gray; word-break: break-all; font-size:12px;">原英文版地址: <a href="https://www.elastic.co/guide/en/elasticsearch/reference/7.7/encrypting-internode-communications.html" rel="nofollow" target="_blank">https://www.elastic.co/guide/en/elasticsearch/reference/7.7/encrypting-internode-communications.html</a>, 原文档版权归 www.elastic.co 所有<br/>本地英文版地址: <a href="../en/encrypting-internode-communications.html" rel="nofollow" target="_blank">../en/encrypting-internode-communications.html</a></div>
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<strong>重要</strong>: 此版本不会发布额外的bug修复或文档更新。最新信息请参考 <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html" rel="nofollow">当前版本文档</a>。
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<h2 class="title">
<a id="encrypting-internode-communications"></a>Tutorial: Encrypting communications<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/x-pack/docs/en/security/securing-communications/tutorial-tls-intro.asciidoc">edit</a><a class="xpack_tag" href="https://www.elastic.co/subscriptions"></a>
</h2>
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<p>In the <a href="https://www.elastic.co/guide/en/elastic-stack-get-started/7.7/get-started-elastic-stack.html" class="ulink" target="_top">Getting started with the Elastic Stack</a>
and <a class="xref" href="security-getting-started.html" title="Tutorial: Getting started with security">Getting started with security</a> tutorials, we
used a cluster with a single Elasticsearch node to get up and running with the Elastic Stack.</p>
<p>You can add as many nodes as you want in a cluster but they must be able to
communicate with each other. The communication between nodes in a cluster is
handled by the <a href="modules-transport.html" class="ulink" target="_top">transport module</a>. To secure your
cluster, you must ensure that the internode communications are encrypted.</p>
<div class="note admon">
<div class="icon"></div>
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<p>In this tutorial, we add more nodes by installing more copies of Elasticsearch on
the same machine. By default, Elasticsearch binds to loopback addresses for HTTP and
transport communication. That is fine for the purposes of this tutorial and for
downloading and experimenting with Elasticsearch in a test or development environment.
When you are deploying a production environment, however, you are generally
adding nodes on different machines so that your cluster is resilient to outages
and avoids data loss. In a production scenario, there are additional
requirements that are not covered in this tutorial. See
<a href="bootstrap-checks.html#dev-vs-prod-mode" class="ulink" target="_top">Development vs production mode</a> and
<a href="add-elasticsearch-nodes.html" class="ulink" target="_top">Adding nodes to your cluster</a>.</p>
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<h3>
<a id="encrypting-internode-prerequisites"></a>Before you begin<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch/edit/7.7/x-pack/docs/en/security/securing-communications/tutorial-tls-intro.asciidoc">edit</a>
</h3>
<p>Ideally, you should do this tutorial after you complete the
<a href="https://www.elastic.co/guide/en/elastic-stack-get-started/7.7/get-started-elastic-stack.html" class="ulink" target="_top">Getting started with the Elastic Stack</a> and
<a class="xref" href="security-getting-started.html" title="Tutorial: Getting started with security">Getting started with security</a> tutorials.</p>
<p>At a minimum, you must install and configure Elasticsearch and Kibana in a cluster with a
single Elasticsearch node. In particular, this tutorial provides instructions for adding
nodes that work with the <code class="literal">zip</code> and <code class="literal">tar.gz</code> packages.</p>
<div class="important admon">
<div class="icon"></div>
<div class="admon_content">
<p>To complete this tutorial, you must install the default Elasticsearch and
Kibana packages, which include the encrypted communications security features.
When you install these products, they apply basic licenses with no expiration
dates. All of the subsequent steps in this tutorial assume that you are using a
basic license. For more information, see <a href="https://www.elastic.co/subscriptions" class="ulink" target="_top">https://www.elastic.co/subscriptions</a> and
<a href="https://www.elastic.co/guide/en/kibana/7.7/managing-licenses.html" class="ulink" target="_top">License management</a>.</p>
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